Is stepfun-ai/Step-3.5-Flash or Qwen/Qwen3.5-397B-A17B cheaper?

stepfun-ai/Step-3.5-Flash is cheaper on output tokens ($0.30 vs $1.74 per 1M).

Which has the larger context window, stepfun-ai/Step-3.5-Flash or Qwen/Qwen3.5-397B-A17B?

Qwen/Qwen3.5-397B-A17B has the larger context window (262K tokens).

stepfun-ai/Step-3.5-Flash vs Qwen/Qwen3.5-397B-A17B

stepfun-ai/Step-3.5-Flash is cheaper on output tokens, while Qwen/Qwen3.5-397B-A17B offers a larger context window. Choose stepfun-ai/Step-3.5-Flash or Qwen/Qwen3.5-397B-A17B based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	stepfun-ai/Step-3.5-Flash	Qwen/Qwen3.5-397B-A17B
Provider	SiliconFlow (China)	SiliconFlow (China)
Input / 1M tokens	$0.10	$0.29
Output / 1M tokens	$0.30	$1.74
Context window	262K	262K
Parameters	—	397B
Open weights	No	Yes
Released	Feb 2026	Feb 2026

stepfun-ai/Step-3.5-Flash details →Qwen/Qwen3.5-397B-A17B details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.